Published online Jun 16, 2021. doi: 10.12998/wjcc.v9.i17.4303
Peer-review started: January 9, 2021
First decision: January 24, 2021
Revised: February 3, 2021
Accepted: March 24, 2021
Article in press: March 24, 2021
Published online: June 16, 2021
Processing time: 137 Days and 6.7 Hours
Herpes zoster is a painful infectious disease caused by the varicella zoster virus. Herpes zoster radiculopathy, which is a type of segmental zoster paresis, can complicate the disease and cause motor weakness. This complication should be considered when a patient with a rash complains of acute-onset motor weakness, and the diagnosis can be verified via electrodiagnostic study.
A 64-year-old female with a history of asthma presented to the emergency department with stabbing pain, an itching sensation, and a rash on the right anterior shoulder that had begun 5 d prior. Physical examination revealed multiple erythematous grouped vesicles in the right C4-5 and T1 dermatome regions. Because herpes zoster was suspected, the patient immediately received intravenous acyclovir. On the third hospital day, she complained of motor weakness in the right upper extremity. Magnetic resonance imaging of the cervical spine revealed mild intervertebral disc herniation at C4-C5 without evidence of nerve root compression. On the 12th hospital day, electrodiagnostic study revealed right cervical radiculopathy, mainly in the C5/6 roots. Six months later, monoparesis resolved, and follow-up electrodiagnostic study was normal.
This case emphasizes that clinicians should consider the possibility of post-herpetic paresis, such as herpes zoster radiculopathy, and that electrodiagnostic study is useful for diagnosis and follow-up.
Core Tip: Herpes zoster is caused by reactivation of latent varicella zoster virus and characterized by clustered vesicles with neuralgic pain. We present a rare case of herpes zoster radiculopathy and accompanying severe motor weakness. The patient was diagnosed via electrodiagnostic study, and complete recovery was confirmed through follow-up electrodiagnostic study. This case emphasizes that clinicians should consider the possibility of post-herpetic paresis, such as herpes zoster radiculopathy, and that electrodiagnostic study is a helpful tool for diagnosis and follow-up.